Device for loosening outer races of ball-bearings.



E. P. CAMPBELL.

DEVICE FOR LAVSENING OUTER RACES 0F BALL BEARINgs.

APRLRCATION FILED SEPT 18. 39H).

LQQLMQU mama 001;. 3,1917

I m' 1 1m TOR.

WITNESS .if ffizmgnbel? Gum 5 mm 1 QA/TORNEY renew rponmrnrlrm, or scroemorr, mmroemnnesmnon or OIiE-HALF rooosnmr l v E. GGUDBIAE, OF STOCKTGN, CALIFOMTI 'nnvroze For: ween-rune ourrm means or BALL-BEABINGSQ ro ers.

' To all whom 65 may concern:

Be it known that I, ERNST P. (lnrrrmmq, o citizen ofthe United Statesx residing a; Stockton, iu the eounlly of new and useful Improvements in fievices for Loosening'flnter Races of BelL-jBeerlogs; and I do declare one followlngfiio be e full, cleem end ez'mce desoriprlon of "labe some reference being bad no the accompenymg dreyvings, and to the" characters of;

reference marked. thereon, which form "a part oi this application i Tllhie invention relateseo 'improvemenos in e derice for taking one o porllonfiof em such as bell bearings on" magneto wells or similar devices, the object of the invention being especially. for the porpoee of looseningthe outer receolt: thebeering which re nsnally set .by ir'lctxonelcontect one an end pleteor snmler mjncture.

Thwo e lre so tigbtlg fittedjthet'tllere is no may of loosening t em by the preeeni; do methods either tl1a.n by boring; a, hole bhrough on beck glare and tappmg them one, By means of my improved structure however/Ll figure to stert them by eislig'ht wedg- Eng ection 'wlzieb Will'loos o therefrom rherear end permit thorn to mcreefter be pulled em, the recess. My improvedi mvemion'is particularly adapted for use in eonneecion with my bearing puller upon which Tl have a patent dated. February 15, 1916, No. 1,171,590. While my invention as stated is especially adapted for use in connection will! the device as shown in, the

above patent stillv it is not necessarily r limited to -use in such connection but eon housed independently will be readily epparent. I I My new invention embodles radially mow ing fingers having sherp Wedge Shaped edgee which, when (the finger-membersere expended, edge in behind the bearing collar and start it from its'position alles' will presently appezm A further object of the. invention is to producee simple and inexpensive device and .Vet one which will be exceedingly efieclive for -the purposes for which it is designed.

These objects I accomplish by means of Specification of'Le tters iatenfb.

an Joaquin; State of Califomle, have mounted certem" enlsly appear. 1

The'finger members 7 are held together by means ofa surrounding collar 9 having set screws 10 projected theretbrough and"v "snch stru'ctureand reletive arrengelnent of 7 the'pei'teas-will fully appear by a perusal of the following specification and .claims.

In the drawmgs slmilarlcharacters of reference mdicate correoponding parts 111 the wg hownin Fig. 2.

" r Fig. 4: is e front end view of the semei 4 Patented Oct. 2, 1917. Application.filedlaep'tember18,1916: swarm. 1 2o,s1e. I

Referring now more particularly to the characters of reference on-thedrawings, and,

referring especially-to Fig.- 1, the left hand portion of said Fig". 1 shows the device 'eovered by my Haidpotent indicated above. This-consists of the radial moving fingers 1 mounted on the threaded pin 3 and provided with. the collar 4 which encircles the finger members 1 to clamp them around obyfe'cte :md'especmlly around my nnproved niventeom-as 11 a p om;

My said improve 'mvcntion comprises a -j i1r5 having an enlarged end 6 provided with interior threads adapted to allow'the "pin 5 to be threaded upon the in 3.

Mounted u on the pin 5 are a plum ity of finger mom rs 7 forming in their entirety a substantially cylindrical member 4 surrounding; the pin 5 and normally abutting against the enlarged end 6. These finger members 3" adjacent the member 6 are pro- ,vided witll1', 'o plurality'of grooves 8 forming in their, entirety an annular'groove orrang'edto be engagedand clamped by the finger: members 1 as shown in Fig. 1 to hold my improved tool tigh tlv in engagement with'tbe finger members '1 and thereupon the threaded member 6 is engaged with tlie' threeded pin 3 for a" pnrpoee as will pressi'nto recesses 11 in the said finger members 7 Stud. recesses 11 areoia larger diameter than the set screws 10 to allow the finger-J members 71:0 have a radial movementuporl the pin 5. The inner surfaces of the"I'nem-- v hers "I taper slightly from their inner to their outerends. Tremor edges of the members 12 outer ends of the members 7 are provided with sharp wedge-shaped flanges 12. The pin 5 at finger members 7 and is enlarged, as at 13, with a tapering shoulder 14 extending from the enlarged end 13 to the pin 5 immediately adjacent the outer ends of the finger members 7.

The numeral 15 designates the face plate of the mechanism carrying the bearing: and the numeral 16 designates the bearing race fitted within the recess therein and which it is desired to remove by the use of my improved tool, which removal is; accomplished in the following manner:

The finger members 7 are projected into the recess until their ends project against the bottom thereof immediately adjacent the collar 16. A small bar or pin is then projected through the hole 17 in the' enlarged end 13 and the said pin 5 is then turned toadvance the threaded end 6 upon the pin 3. This causes the tapered shoulder 14 to advance against the ends of the finger members 7 and expand them. This expansion causes the sharp wedge-shaped to wedge in back of the race 16 and force it from its seat. Upon being started from its seat it is thereafter very easy to quickly remove the same. The ex pending action of the fingers 7 is allowed of by reason of the radial movement which r they have upon the pin 5.

From the foregoing description it will readily be seen that I have produced such its outer end projects beyond the a device as substantially fulfils the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claim.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

- A device of the character described comprising a pin having an interiorly threaded end and a tapered shoulder at the opposite end, a plurality of finger members disposed around said pin and each being provided with recesses, a collar disposed around the finger members adjacent said recesses, set screws projecting through the collar into the recesses, the diameter of the set screws being less than the diameter of the recesses, said finger members being tapered on their inner sides whereby they will have radial movement upon the pin. with respebt to each other, projecting wedge-shaped flanges on the outer edgespgtahe finger members at the end opposite said collar, said tapered shoulder on the pin being arrangedto project between the finger members to expan the same as the threaded end of the pin is advanced longitudinally of the finger members.

- In testimony whereof 1 affix my signature.

- 1 ERNST P. CAMPBELL. 

